Tank for a sprayer



FIG. 1 is a front elevational view of my new design for a tank for a sprayer;

FIG. 2 is a right side elevational view thereof, the left side elevational view being identical;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof. 

The ornamental design for a tank for sprayer, as shown and described. 